キラキラ (2)
////////////////////////////////////////////////////////////////////////////////
// キラキラ (2)
//
// [AS3.0] TwinkleParticlesクラスだ! (3)
// http://www.project-nya.jp/modules/weblog/details.php?blog_id=1370
////////////////////////////////////////////////////////////////////////////////
/**
* Copyright ProjectNya ( http://wonderfl.net/user/ProjectNya )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/isEp
*/
////////////////////////////////////////////////////////////////////////////////
// キラキラ (2)
//
// [AS3.0] TwinkleParticlesクラスだ! (3)
// http://www.project-nya.jp/modules/weblog/details.php?blog_id=1370
////////////////////////////////////////////////////////////////////////////////
package {
import flash.display.Sprite;
[SWF(backgroundColor="#000000", width="465", height="465", frameRate="30")]
public class Main extends Sprite {
private var twinkle:TwinkleParticles;
public function Main() {
//Wonderfl.capture_delay(1);
init();
}
private function init():void {
graphics.beginFill(0x000000);
graphics.drawRect(0, 0, 465, 465);
graphics.endFill();
//
twinkle = new TwinkleParticles();
addChild(twinkle);
}
}
}
//////////////////////////////////////////////////
// TwinkleParticlesクラス
//////////////////////////////////////////////////
import flash.display.Sprite;
import flash.events.Event;
import flash.events.MouseEvent;
import flash.geom.Rectangle;
import flash.display.BitmapData;
import flash.display.Bitmap;
import flash.geom.ColorTransform;
import flash.geom.Point;
import flash.filters.BlurFilter;
import frocessing.color.ColorHSV;
class TwinkleParticles extends Sprite {
private var particles:Array;
private var rect:Rectangle;
private var bitmapData:BitmapData;
private var bitmap:Bitmap;
private var container:Sprite;
private static var colorTrans:ColorTransform;
private static var point:Point = new Point();
private static var blur:BlurFilter;
private var count:uint = 0;
private var color:ColorHSV;
public function TwinkleParticles() {
particles = new Array();
if (stage) init();
else addEventListener(Event.ADDED_TO_STAGE, init, false, 0, true);
}
private function init(evt:Event = null):void {
removeEventListener(Event.ADDED_TO_STAGE, init);
rect = new Rectangle(0, 0, stage.stageWidth, stage.stageHeight);
bitmapData = new BitmapData(rect.width, rect.height, true, 0x00000000);
bitmap = new Bitmap(bitmapData);
addChild(bitmap);
container = new Sprite();
addChild(container);
colorTrans = new ColorTransform(1, 1, 1, 0.6, 0, 0, 0, 0);
blur = new BlurFilter(16, 16, 3);
color = new ColorHSV(0, 0.5);
stage.addEventListener(MouseEvent.MOUSE_MOVE, create, false, 0, true);
addEventListener(Event.ENTER_FRAME, update, false, 0, true);
}
private function create(evt:MouseEvent):void {
count += 2;
color.h = count;
var particle:Particle = new Particle(color.value);
particle.x = mouseX;
particle.y = mouseY;
container.addChild(particle);
particles.push(particle);
}
private function update(evt:Event):void {
for (var n:uint = 0; n < particles.length; n++) {
var particle:Particle = particles[n];
particle.update();
if (particle.life < 0 || particle.y > stage.stageHeight + 50) {
container.removeChild(particle);
particles.splice(n, 1);
particle = null;
}
}
draw();
}
private function draw():void {
bitmapData.lock();
bitmapData.draw(container, null, colorTrans);
bitmapData.applyFilter(bitmapData, rect, point, blur);
bitmapData.unlock();
}
}
//////////////////////////////////////////////////
// Particleクラス
//////////////////////////////////////////////////
import flash.display.Sprite;
import flash.filters.GlowFilter;
class Particle extends Sprite {
private var glow:GlowFilter;
private var _width:uint = 12;
private var _height:uint = 18;
private var blur:uint = 8;
private static var color:uint = 0xFFFFFF;
private static var max:uint = 50;
public var life:int = max;
private static var radius:Number = 3;
private var dx:Number = 0;
private var gravity:Number = - 6;
private static var acceleration:Number = 0.8;
public function Particle(rgb:uint = 0xFFFFFF, w:uint = 12, h:uint = 18, b:uint = 8) {
_width = w;
_height = h;
blur = b;
glow = new GlowFilter(rgb, 1, blur, blur, 2, 3, false, false);
draw();
init();
}
private function init():void {
dx = Math.random()*radius*2 - radius;
}
public function update():void {
if (life < 0) return;
life --;
x += dx;
gravity += acceleration;
y += gravity;
alpha = (life/max < 0.5) ? life*2/max : 1;
blink();
}
private function blink():void {
if (life%4 == 0) {
visible = false;
} else {
visible = true;
}
}
private function draw():void {
graphics.beginFill(color);
graphics.moveTo(0, -_height/2);
graphics.curveTo(0, 0, -_width/2, 0);
graphics.curveTo(0, 0, 0, _height/2);
graphics.curveTo(0, 0, _width/2, 0);
graphics.curveTo(0, 0, 0, -_height/2);
graphics.endFill();
filters = [glow];
}
}